US20070272414A1 - Method of riser deployment on a subsea wellhead - Google Patents

Method of riser deployment on a subsea wellhead Download PDF

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Publication number
US20070272414A1
US20070272414A1 US11/442,092 US44209206A US2007272414A1 US 20070272414 A1 US20070272414 A1 US 20070272414A1 US 44209206 A US44209206 A US 44209206A US 2007272414 A1 US2007272414 A1 US 2007272414A1
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US
United States
Prior art keywords
riser
plug
wellhead
heavy material
rig
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/442,092
Inventor
Larry T. Palmer
David Dolyniuk
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Baker Hughes Holdings LLC
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US11/442,092 priority Critical patent/US20070272414A1/en
Assigned to BAKER HUGHES INCORPORATED reassignment BAKER HUGHES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOLYNUIK, DAVID, PALMER, LARRY T.
Priority to CA002655231A priority patent/CA2655231A1/en
Priority to GB0822946A priority patent/GB2453073A/en
Priority to PCT/US2007/069764 priority patent/WO2007140311A1/en
Priority to AU2007267549A priority patent/AU2007267549A1/en
Publication of US20070272414A1 publication Critical patent/US20070272414A1/en
Priority to NO20085225A priority patent/NO20085225L/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers

Definitions

  • the field of this invention is riser placement on a subsea wellhead and more specifically when using a floating rig.
  • Floating rigs are connected to subsea wellheads through a string called a riser that spans the distance between the rig floor and the wellhead located just above the sea floor. Floating rigs are normally positioned and secured to hold a selected position while still able to compensate for the rise and fall of the surface from wave action. Before or after a rig is positioned the riser assembly is made up in sections on the rig floor and run in. If the riser is made up before, the currents can be used to guide the rig closer to the subsea BOP. The water depths for some floating rigs can be in the thousands of meters and the wave action at the surface has a component below the surface that can deflect the riser string as it is made up and lowered toward the wellhead.
  • the skewing effect is well known and in the past the position of the floating rig with respect to the wellhead is adjusted to take advantage of the expected lateral forces from wave action so that when the riser is fully assembled, its lower end will be in close proximity to the wellhead so that the two can be stabbed in, or simply connected with divers or remotely operated vehicles (ROVs).
  • ROVs remotely operated vehicles
  • the problem lies in the inherent unpredictability of the tidal forces both in strength and in direction. Repositioning of the floating rig is time consuming and may require the riser string to be pulled back onto the rig before it can be repositioned.
  • the present invention is directed at a technique to minimize the effect of wave action as opposed to the past techniques of simply trying to compensate for its predicted force and direction.
  • the riser assembly is plugged adjacent its bottom end either as it is made up or after full makeup or anywhere in between.
  • a heavy fluid is either added to the riser string as it is made up or delivered into the string after makeup to displace seawater or other fluids that may have been in the riser as it is assembled.
  • the floating rig can be secured over the subsea well head and the riser now full of heavy fluid is less prone to be displaced by wave action and preferably simply dangles straight down so that the connection to the subsea wellhead can be simply accomplished. The effect of wave action is minimized or eliminated when deciding placement of the floating rig with respect to the wellhead. Repositioning of the rig takes less effort and is needed less frequently.
  • FIG. 1 shows current deflecting a riser that is plugged at the bottom
  • FIG. 2 is a close in view of the riser bottom showing the plug
  • FIG. 3 shows the riser filled with a heavy fluid and generally aligned with the wellhead
  • FIG. 4 shows the riser connected to the wellhead
  • FIG. 5 shows the riser connected and the plug removed.
  • FIG. 1 shows a floating rig 10 set over a subsea wellhead 12 and supporting a riser 14 that is being deflected by currents active between the sea bed 16 and the surface 18 .
  • a plug 22 Near the lower end 20 of the riser 14 is a plug 22 that can be installed when the riser string 14 is assembled or later after it is fully assembled by running it in using a variety of known techniques.
  • drilling mud or seawater for example, can be added above the plug 22 as each stand of riser pipe is connected at the surface and lowered in.
  • FIG. 2 shows the lower end 20 closer up showing the plug 22 and schematically illustrating the connecting hardware 24 to attach to the wellhead 12 .
  • the plug can be deployed or dropped into the riser 14 and displaced with heavy fluid to a seat within the riser 14 .
  • the plug can be in position at the lower end of the riser but not seated off so as to allow heavy fluid to be spotted above it displacing the seawater, after which the plug can be seated off or set, depending on the type used.
  • the plug can be an inflatable, or mechanical or a non-elstomer type. It can also be wiper that lands on a seat in the riser 14 .
  • FIG. 3 shows the riser 14 full of heavy fluid 26 .
  • this fluid There are many choices for this fluid with the criteria being to provide stiffness and fully take advantage of gravity to counteract the applied force from currents.
  • FIG. 4 shows the riser 14 stabbed in, or simply connected such as with divers or an ROV with the plug 22 still in place.
  • FIG. 5 illustrates the plug 22 released with known tools and brought to surface with flow from the well that also displaces the heavy fluid 26 out of the riser 14 .
  • the plug can be milled or drilled with the cuttings going to the surface with the heavy fluid.
  • the plug can be removed with a known technique and the heavy fluid simply pumped downhole instead of being allowed to be displaced to the surface.
  • Heavy fluids such as high weight drilling fluids
  • other fluids or gels can be used as long as they are easily pumped into position and just as simply displaced out of the way or pumped out of the way.
  • Solids can be included in the heavy fluid in various shapes such as spheres using preferably dense metals and sizing the objects so that flow from the well, for example, will bring them out to the surface.
  • the method allows placement of the rig 10 over the wellhead 12 with little or no concern over lateral deflection of the string 14 away from the wellhead 12 due to current force.
  • the need to guess in advance the deflection effects of currents, which can be highly variable, is greatly reduced or eliminated.
  • the rig 10 is unlikely to need repositioning during the procedure of running the riser 14 and connecting it to the wellhead.

Abstract

The riser assembly is plugged adjacent its bottom end either as it is made up or after full makeup or anywhere in between. A heavy fluid is either added to the riser string as it is made up or delivered into the string after makeup to displace seawater or other fluids that may have been in the riser as it is assembled. The floating rig can be secured over the subsea well head and the riser now full of heavy fluid is less prone to be displaced by wave action and preferably simply dangles straight down so that the connection to the subsea wellhead can be simply accomplished. The effect of wave action is minimized or eliminated when deciding placement of the floating rig with respect to the wellhead. Repositioning of the rig takes less effort and is needed less frequently.

Description

    FIELD OF THE INVENTION
  • The field of this invention is riser placement on a subsea wellhead and more specifically when using a floating rig.
    • BACKGROUND OF THE INVENTION
  • Floating rigs are connected to subsea wellheads through a string called a riser that spans the distance between the rig floor and the wellhead located just above the sea floor. Floating rigs are normally positioned and secured to hold a selected position while still able to compensate for the rise and fall of the surface from wave action. Before or after a rig is positioned the riser assembly is made up in sections on the rig floor and run in. If the riser is made up before, the currents can be used to guide the rig closer to the subsea BOP. The water depths for some floating rigs can be in the thousands of meters and the wave action at the surface has a component below the surface that can deflect the riser string as it is made up and lowered toward the wellhead. The skewing effect is well known and in the past the position of the floating rig with respect to the wellhead is adjusted to take advantage of the expected lateral forces from wave action so that when the riser is fully assembled, its lower end will be in close proximity to the wellhead so that the two can be stabbed in, or simply connected with divers or remotely operated vehicles (ROVs). The problem lies in the inherent unpredictability of the tidal forces both in strength and in direction. Repositioning of the floating rig is time consuming and may require the riser string to be pulled back onto the rig before it can be repositioned.
  • The present invention is directed at a technique to minimize the effect of wave action as opposed to the past techniques of simply trying to compensate for its predicted force and direction. Those and other aspects of the present invention will be more readily understood by those skilled in the art from a review of the description of the preferred embodiment and the drawings as well as the claims below that define the full scope of the invention.
    • SUMMARY OF THE INVENTION
  • The riser assembly is plugged adjacent its bottom end either as it is made up or after full makeup or anywhere in between. A heavy fluid is either added to the riser string as it is made up or delivered into the string after makeup to displace seawater or other fluids that may have been in the riser as it is assembled. The floating rig can be secured over the subsea well head and the riser now full of heavy fluid is less prone to be displaced by wave action and preferably simply dangles straight down so that the connection to the subsea wellhead can be simply accomplished. The effect of wave action is minimized or eliminated when deciding placement of the floating rig with respect to the wellhead. Repositioning of the rig takes less effort and is needed less frequently.
    • DETAILED DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows current deflecting a riser that is plugged at the bottom;
  • FIG. 2 is a close in view of the riser bottom showing the plug;
  • FIG. 3 shows the riser filled with a heavy fluid and generally aligned with the wellhead;
  • FIG. 4 shows the riser connected to the wellhead; and
  • FIG. 5 shows the riser connected and the plug removed.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • FIG. 1 shows a floating rig 10 set over a subsea wellhead 12 and supporting a riser 14 that is being deflected by currents active between the sea bed 16 and the surface 18. Near the lower end 20 of the riser 14 is a plug 22 that can be installed when the riser string 14 is assembled or later after it is fully assembled by running it in using a variety of known techniques. In the event the plug 22 is initially installed in the lowermost joint or joints of the riser string 14, drilling mud or seawater, for example, can be added above the plug 22 as each stand of riser pipe is connected at the surface and lowered in. FIG. 2 shows the lower end 20 closer up showing the plug 22 and schematically illustrating the connecting hardware 24 to attach to the wellhead 12. The plug can be deployed or dropped into the riser 14 and displaced with heavy fluid to a seat within the riser 14. Alternatively, the plug can be in position at the lower end of the riser but not seated off so as to allow heavy fluid to be spotted above it displacing the seawater, after which the plug can be seated off or set, depending on the type used. The plug can be an inflatable, or mechanical or a non-elstomer type. It can also be wiper that lands on a seat in the riser 14.
  • FIG. 3 shows the riser 14 full of heavy fluid 26. There are many choices for this fluid with the criteria being to provide stiffness and fully take advantage of gravity to counteract the applied force from currents. In the ideal condition with the rig 10 above the wellhead 12 the riser 14 dangles straight down over the wellhead 12, as shown in FIG. 3. FIG. 4 shows the riser 14 stabbed in, or simply connected such as with divers or an ROV with the plug 22 still in place.
  • FIG. 5 illustrates the plug 22 released with known tools and brought to surface with flow from the well that also displaces the heavy fluid 26 out of the riser 14. Other alternatives to get to the FIG. 5 condition are contemplated. The plug can be milled or drilled with the cuttings going to the surface with the heavy fluid. Alternatively, the plug can be removed with a known technique and the heavy fluid simply pumped downhole instead of being allowed to be displaced to the surface. Alternative to heavy fluids, such as high weight drilling fluids other fluids or gels can be used as long as they are easily pumped into position and just as simply displaced out of the way or pumped out of the way. Solids can be included in the heavy fluid in various shapes such as spheres using preferably dense metals and sizing the objects so that flow from the well, for example, will bring them out to the surface.
  • In the end, the method allows placement of the rig 10 over the wellhead 12 with little or no concern over lateral deflection of the string 14 away from the wellhead 12 due to current force. The need to guess in advance the deflection effects of currents, which can be highly variable, is greatly reduced or eliminated. The rig 10 is unlikely to need repositioning during the procedure of running the riser 14 and connecting it to the wellhead.
  • The above description is illustrative of the preferred embodiment and many modifications may be made by those skilled in the art without departing from the invention whose scope is to be determined from the literal and equivalent scope of the claims below.

Claims (13)

1. A method of connecting a riser to a subsea wellhead comprising:
assembling the riser;
installing a plug in said riser:
adding a heavy material in the riser above the plug;
lowering said riser toward the wellhead; and
connecting the riser to the wellhead.
2. The method of claim 1, comprising:
making said riser resist deflection from current forces due to said heavy material.
3. The method of claim 2, comprising:
positioning a rig closer to being over the wellhead due to reduced riser deflection from current when holding said heavy material.
4. The method of claim 1, comprising:
installing and setting said plug as said riser is assembled at the surface;
filling in said heavy material as additional riser sections are added at the surface.
5. The method of claim 1, comprising:
installing said plug after said riser is fully assembled and lowered;
displacing seawater in said riser with said heavy material.
6. The method of claim 5, comprising:
sealing off said riser with said plug after said displacing.
7. The method of claim 1, comprising:
using a liquid as said heavy material.
8. The method of claim 7, comprising:
including solids in said liquid.
9. The method of claim 1, comprising:
using a gel as said heavy material.
10. The method of claim 1, comprising:
removing said plug after said connecting.
11. The method of claim 10, comprising:
bringing the plug up the riser with flow from the well.
12. The method of claim 10, comprising:
drilling or milling the plug to remove it.
13. The method of claim 1, comprising:
said installing further comprises using an inflatable plug, a mechanically set plug, non-elastomer plug or a wiper plug landing on a seat.
US11/442,092 2006-05-26 2006-05-26 Method of riser deployment on a subsea wellhead Abandoned US20070272414A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US11/442,092 US20070272414A1 (en) 2006-05-26 2006-05-26 Method of riser deployment on a subsea wellhead
CA002655231A CA2655231A1 (en) 2006-05-26 2007-05-25 Method of riser deployment on a subsea wellhead
GB0822946A GB2453073A (en) 2006-05-26 2007-05-25 Method of riser deployment on a subsea wellhead
PCT/US2007/069764 WO2007140311A1 (en) 2006-05-26 2007-05-25 Method of riser deployment on a subsea wellhead
AU2007267549A AU2007267549A1 (en) 2006-05-26 2007-05-25 Method of riser deployment on a subsea wellhead
NO20085225A NO20085225L (en) 2006-05-26 2008-12-16 Procedure for placing risers on an underwater wellhead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/442,092 US20070272414A1 (en) 2006-05-26 2006-05-26 Method of riser deployment on a subsea wellhead

Publications (1)

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US20070272414A1 true US20070272414A1 (en) 2007-11-29

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US11/442,092 Abandoned US20070272414A1 (en) 2006-05-26 2006-05-26 Method of riser deployment on a subsea wellhead

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US (1) US20070272414A1 (en)
AU (1) AU2007267549A1 (en)
CA (1) CA2655231A1 (en)
GB (1) GB2453073A (en)
NO (1) NO20085225L (en)
WO (1) WO2007140311A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080245528A1 (en) * 2005-09-15 2008-10-09 Petroleum Technology Company As Separating Device
US20080302530A1 (en) * 2007-06-08 2008-12-11 Rod Shampine Apparatus and Method for Engaging a Tubular
FR2952399A1 (en) * 2009-11-10 2011-05-13 Inst Francais Du Petrole Riser for connecting sub-marine wellhead to floating drilling support, has connection and/or disconnection unit formed at base, where closing unit closes interior space of riser that is adapted to control draining fluid contained in space
US9404347B1 (en) * 2015-05-15 2016-08-02 Baker Hughes Incorporated Apparatus and method for connecting a riser from an offshore rig to a subsea structure
WO2016164570A1 (en) * 2015-04-07 2016-10-13 Ensco International Incorporated Riser deflection mitigation
US9719330B2 (en) * 2015-12-28 2017-08-01 Cameron International Corporation Subsea equipment pendulum arrestor and method for its use

Citations (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666009A (en) * 1970-01-23 1972-05-30 Gulf Oil Corp Method and apparatus for shutting in offshore wells
US3741296A (en) * 1971-06-14 1973-06-26 Hydril Co Replacement of sub sea blow out preventer packing units
US3741294A (en) * 1972-02-14 1973-06-26 Courtaulds Ltd Underwater well completion method and apparatus
US3827486A (en) * 1972-03-17 1974-08-06 Brown Oil Tools Well reentry system
US4042014A (en) * 1976-05-10 1977-08-16 Bj-Hughes Inc. Multiple stage cementing of well casing in subsea wells
US4047566A (en) * 1976-02-27 1977-09-13 Duke John A Well cementing method and apparatus
US4077472A (en) * 1976-07-26 1978-03-07 Otis Engineering Corporation Well flow control system and method
US4176986A (en) * 1977-11-03 1979-12-04 Exxon Production Research Company Subsea riser and flotation means therefor
US4399872A (en) * 1980-03-21 1983-08-23 Chevron Research Company Guidelineless system for riser entry/reentry that permits quick release of a riser column from a subsea installation
US4403658A (en) * 1980-09-04 1983-09-13 Hughes Tool Company Multiline riser support and connection system and method for subsea wells
US4448568A (en) * 1982-06-22 1984-05-15 Mobil Oil Corporation Marine surface facility work station for subsea equipment handling
US4770247A (en) * 1987-05-07 1988-09-13 Cameron Iron Works Usa, Inc. Subsea riser for multiple bore wells
US5161620A (en) * 1991-06-27 1992-11-10 Shell Offshore Inc. Subsea production wellhead assembly
US5425424A (en) * 1994-02-28 1995-06-20 Baker Hughes Incorporated Casing valve
US5660232A (en) * 1994-11-08 1997-08-26 Baker Hughes Incorporated Liner valve with externally mounted perforation charges
US5676209A (en) * 1995-11-20 1997-10-14 Hydril Company Deep water riser assembly
US5875848A (en) * 1997-04-10 1999-03-02 Reading & Bates Development Co. Weight management system and method for marine drilling riser
US5881815A (en) * 1995-11-29 1999-03-16 Deep Oil Technology, Incorporated Drilling, production, test, and oil storage caisson
US6070668A (en) * 1996-11-08 2000-06-06 Sonsub Inc. Blowout preventer spanner joint with emergency disconnect capability
US6102125A (en) * 1998-08-06 2000-08-15 Abb Vetco Gray Inc. Coiled tubing workover riser
US6109353A (en) * 1995-09-20 2000-08-29 Expro North Sea Limited Single bore riser system
US6142236A (en) * 1998-02-18 2000-11-07 Vetco Gray Inc Abb Method for drilling and completing a subsea well using small diameter riser
US6220350B1 (en) * 1998-12-01 2001-04-24 Halliburton Energy Services, Inc. High strength water soluble plug
US6367551B1 (en) * 1998-12-18 2002-04-09 Abb Vetco Gray Incorporated Monobore riser
US6672390B2 (en) * 2001-06-15 2004-01-06 Shell Oil Company Systems and methods for constructing subsea production wells
US6712153B2 (en) * 2001-06-27 2004-03-30 Weatherford/Lamb, Inc. Resin impregnated continuous fiber plug with non-metallic element system
US20040118564A1 (en) * 2002-08-21 2004-06-24 Packers Plus Energy Services Inc. Method and apparatus for wellbore fluid treatment
US6769491B2 (en) * 2002-06-07 2004-08-03 Weatherford/Lamb, Inc. Anchoring and sealing system for a downhole tool
US20040238173A1 (en) * 2003-01-13 2004-12-02 Bissonnette H. Steven Method and apparatus for treating a subterranean formation
US6848511B1 (en) * 2002-12-06 2005-02-01 Weatherford/Lamb, Inc. Plug and ball seat assembly
US6896063B2 (en) * 2003-04-07 2005-05-24 Shell Oil Company Methods of using downhole polymer plug
US20050205264A1 (en) * 2004-03-18 2005-09-22 Starr Phillip M Dissolvable downhole tools
US20050205265A1 (en) * 2004-03-18 2005-09-22 Todd Bradley L One-time use composite tool formed of fibers and a biodegradable resin
US20050205266A1 (en) * 2004-03-18 2005-09-22 Todd Bradley I Biodegradable downhole tools
US20060021756A1 (en) * 2004-08-02 2006-02-02 Kellogg Brown And Root, Inc. Dry tree subsea well communications apparatus and method using variable tension large offset risers
US7380609B2 (en) * 2003-08-08 2008-06-03 Woodside Energy Limited Method and apparatus of suspending, completing and working over a well

Patent Citations (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666009A (en) * 1970-01-23 1972-05-30 Gulf Oil Corp Method and apparatus for shutting in offshore wells
US3741296A (en) * 1971-06-14 1973-06-26 Hydril Co Replacement of sub sea blow out preventer packing units
US3741294A (en) * 1972-02-14 1973-06-26 Courtaulds Ltd Underwater well completion method and apparatus
US3827486A (en) * 1972-03-17 1974-08-06 Brown Oil Tools Well reentry system
US4047566A (en) * 1976-02-27 1977-09-13 Duke John A Well cementing method and apparatus
US4042014A (en) * 1976-05-10 1977-08-16 Bj-Hughes Inc. Multiple stage cementing of well casing in subsea wells
US4077472A (en) * 1976-07-26 1978-03-07 Otis Engineering Corporation Well flow control system and method
US4176986A (en) * 1977-11-03 1979-12-04 Exxon Production Research Company Subsea riser and flotation means therefor
US4399872A (en) * 1980-03-21 1983-08-23 Chevron Research Company Guidelineless system for riser entry/reentry that permits quick release of a riser column from a subsea installation
US4403658A (en) * 1980-09-04 1983-09-13 Hughes Tool Company Multiline riser support and connection system and method for subsea wells
US4448568A (en) * 1982-06-22 1984-05-15 Mobil Oil Corporation Marine surface facility work station for subsea equipment handling
US4770247A (en) * 1987-05-07 1988-09-13 Cameron Iron Works Usa, Inc. Subsea riser for multiple bore wells
US5161620A (en) * 1991-06-27 1992-11-10 Shell Offshore Inc. Subsea production wellhead assembly
US5425424A (en) * 1994-02-28 1995-06-20 Baker Hughes Incorporated Casing valve
US5660232A (en) * 1994-11-08 1997-08-26 Baker Hughes Incorporated Liner valve with externally mounted perforation charges
US6109353A (en) * 1995-09-20 2000-08-29 Expro North Sea Limited Single bore riser system
US5676209A (en) * 1995-11-20 1997-10-14 Hydril Company Deep water riser assembly
US5881815A (en) * 1995-11-29 1999-03-16 Deep Oil Technology, Incorporated Drilling, production, test, and oil storage caisson
US6070668A (en) * 1996-11-08 2000-06-06 Sonsub Inc. Blowout preventer spanner joint with emergency disconnect capability
US5875848A (en) * 1997-04-10 1999-03-02 Reading & Bates Development Co. Weight management system and method for marine drilling riser
US6142236A (en) * 1998-02-18 2000-11-07 Vetco Gray Inc Abb Method for drilling and completing a subsea well using small diameter riser
US6102125A (en) * 1998-08-06 2000-08-15 Abb Vetco Gray Inc. Coiled tubing workover riser
US6220350B1 (en) * 1998-12-01 2001-04-24 Halliburton Energy Services, Inc. High strength water soluble plug
US6367551B1 (en) * 1998-12-18 2002-04-09 Abb Vetco Gray Incorporated Monobore riser
US6672390B2 (en) * 2001-06-15 2004-01-06 Shell Oil Company Systems and methods for constructing subsea production wells
US6712153B2 (en) * 2001-06-27 2004-03-30 Weatherford/Lamb, Inc. Resin impregnated continuous fiber plug with non-metallic element system
US6769491B2 (en) * 2002-06-07 2004-08-03 Weatherford/Lamb, Inc. Anchoring and sealing system for a downhole tool
US20040118564A1 (en) * 2002-08-21 2004-06-24 Packers Plus Energy Services Inc. Method and apparatus for wellbore fluid treatment
US6848511B1 (en) * 2002-12-06 2005-02-01 Weatherford/Lamb, Inc. Plug and ball seat assembly
US20040238173A1 (en) * 2003-01-13 2004-12-02 Bissonnette H. Steven Method and apparatus for treating a subterranean formation
US6896063B2 (en) * 2003-04-07 2005-05-24 Shell Oil Company Methods of using downhole polymer plug
US7380609B2 (en) * 2003-08-08 2008-06-03 Woodside Energy Limited Method and apparatus of suspending, completing and working over a well
US20050205264A1 (en) * 2004-03-18 2005-09-22 Starr Phillip M Dissolvable downhole tools
US20050205265A1 (en) * 2004-03-18 2005-09-22 Todd Bradley L One-time use composite tool formed of fibers and a biodegradable resin
US20050205266A1 (en) * 2004-03-18 2005-09-22 Todd Bradley I Biodegradable downhole tools
US20060021756A1 (en) * 2004-08-02 2006-02-02 Kellogg Brown And Root, Inc. Dry tree subsea well communications apparatus and method using variable tension large offset risers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080245528A1 (en) * 2005-09-15 2008-10-09 Petroleum Technology Company As Separating Device
US8235123B2 (en) * 2005-09-15 2012-08-07 Schlumberger Norge As Separating device
US20080302530A1 (en) * 2007-06-08 2008-12-11 Rod Shampine Apparatus and Method for Engaging a Tubular
US20080302542A1 (en) * 2007-06-08 2008-12-11 Jean-Louis Pessin Riserless Deployment System
US7832485B2 (en) 2007-06-08 2010-11-16 Schlumberger Technology Corporation Riserless deployment system
US8376041B2 (en) 2007-06-08 2013-02-19 Schlumberger Technology Corporation Apparatus and method for engaging a tubular
FR2952399A1 (en) * 2009-11-10 2011-05-13 Inst Francais Du Petrole Riser for connecting sub-marine wellhead to floating drilling support, has connection and/or disconnection unit formed at base, where closing unit closes interior space of riser that is adapted to control draining fluid contained in space
WO2016164570A1 (en) * 2015-04-07 2016-10-13 Ensco International Incorporated Riser deflection mitigation
US9903509B2 (en) 2015-04-07 2018-02-27 Ensco International Incorporated Riser deflection mitigation
US9404347B1 (en) * 2015-05-15 2016-08-02 Baker Hughes Incorporated Apparatus and method for connecting a riser from an offshore rig to a subsea structure
US9719330B2 (en) * 2015-12-28 2017-08-01 Cameron International Corporation Subsea equipment pendulum arrestor and method for its use

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Publication number Publication date
AU2007267549A1 (en) 2007-12-06
WO2007140311A1 (en) 2007-12-06
NO20085225L (en) 2009-02-11
CA2655231A1 (en) 2007-12-06
GB0822946D0 (en) 2009-01-21
GB2453073A (en) 2009-03-25

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